linux-kernel - Re: Driver lis3lv02d_i2c not working on Nokia RX-51

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Date:	Thu, 28 Mar 2013 15:11:34 +0100
From:	Pali Rohár <pali.rohar@...il.com>
To:	Aaro Koskinen <aaro.koskinen@....fi>
Cc:	Mark Brown <broonie@...nsource.wolfsonmicro.com>,
	Eric Piel <eric.piel@...mplin-utc.net>,
	Andrew Morton <akpm@...ux-foundation.org>,
	Linus Torvalds <torvalds@...ux-foundation.org>,
	linux-kernel@...r.kernel.org, Tony Lindgren <tony@...mide.com>
Subject: Re: Driver lis3lv02d_i2c not working on Nokia RX-51

On Tuesday 26 March 2013 21:53:19 Aaro Koskinen wrote:
> Hi,
> 
> On Tue, Mar 26, 2013 at 04:02:39PM +0100, Pali Rohár wrote:
> > CCing Aaro and Tony. Look at this thread on:
> > https://lkml.org/lkml/2013/2/16/152
> > 
> > What do you think how to fix this problem? I do not know
> > about any HW regulator for n900 accelerometer and possible
> > solutions could be revert that commit or adding fake
> > regulator to board code...
> 
> I think the following should work:
> 
> ...
> 
> From: Aaro Koskinen <aaro.koskinen@....fi>
> Date: Tue, 26 Mar 2013 21:34:22 +0200
> Subject: [PATCH] OMAP: RX-51: add missing regulator supply
> definitions for lis3lv02d
> 
> Add missing regulator definitions for lis3lv02d accelerometer.
> Fixes the following probe issue:
> 
> [   57.737518] lis3lv02d_i2c 3-001d: Failed to get supply
> 'Vdd': -517 [   57.747100] i2c 3-001d: Driver lis3lv02d_i2c
> requests probe deferral
> 
> Signed-off-by: Aaro Koskinen <aaro.koskinen@....fi>
> ---
>  arch/arm/mach-omap2/board-rx51-peripherals.c |    4 ++++
>  1 file changed, 4 insertions(+)
> 
> diff --git a/arch/arm/mach-omap2/board-rx51-peripherals.c
> b/arch/arm/mach-omap2/board-rx51-peripherals.c index
> 3a077df..1a88467 100644
> --- a/arch/arm/mach-omap2/board-rx51-peripherals.c
> +++ b/arch/arm/mach-omap2/board-rx51-peripherals.c
> @@ -547,12 +547,16 @@ static struct regulator_consumer_supply
> rx51_vio_supplies[] = { REGULATOR_SUPPLY("DVDD", "2-0019"),
>  	/* Si4713 IO supply */
>  	REGULATOR_SUPPLY("vio", "2-0063"),
> +	/* lis3lv02d */
> +	REGULATOR_SUPPLY("Vdd_IO", "3-001d"),
>  };
> 
>  static struct regulator_consumer_supply
> rx51_vaux1_consumers[] = { REGULATOR_SUPPLY("vdds_sdi",
> "omapdss"),
>  	/* Si4713 supply */
>  	REGULATOR_SUPPLY("vdd", "2-0063"),
> +	/* lis3lv02d */
> +	REGULATOR_SUPPLY("Vdd", "3-001d"),
>  };
> 
>  static struct regulator_init_data rx51_vaux1 = {

Hi, on #maemo IRC channel we have found some accelerometer 
regulators and I wrote this patch which is working fine with 3.8:

@@ -728,12 +730,16 @@ static struct regulator_consumer_supply 
rx51_vio_supplies[] = {
 	REGULATOR_SUPPLY("DVDD", "2-0019"),
 	/* Si4713 IO supply */
 	REGULATOR_SUPPLY("vio", "2-0063"),
+	/* lis3lv02d IO supply */
+	REGULATOR_SUPPLY("Vdd_IO", "3-001d"),
 };
 
 static struct regulator_consumer_supply rx51_vaux1_consumers[] = 
{
 	REGULATOR_SUPPLY("vdds_sdi", "omapdss"),
 	/* Si4713 supply */
 	REGULATOR_SUPPLY("vdd", "2-0063"),
+	/* lis3lv02d supply */
+	REGULATOR_SUPPLY("Vdd", "3-001d"),
 };
 
 static struct regulator_init_data rx51_vaux1 = {

Now I see that patch is same as Aaro's :-) so please include it.

-- 
Pali Rohár
pali.rohar@...il.com

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